I am running a new machine with a clean install of Windows XP pro and using a RAID 0+1 (4 discs). The O.S. runs fine except for a non functioning System Restore feature. I have shut off System Restore, shut down and restarted machine. I reenable System Restore, can create only ONE restore point, and the O.S. does not permit any more points. It instructs me to 'restart the machine.' Restarting changes nothing and I cannot create any additional restore points. I tried to use System Restore with the one restore point I could create and nothing worked. Restore never happened. MS knowledge base does not discuss this problem. However, they appear to discuss much about inadequate disk space causing System Restore to deactivate. I have over 90 GIGs of available space so that can be ruled out. Perhaps the presence of the RAID setup is causing System Restore to malfunction. Anyone with similar problem or any good ideas? Thanks.